CVE-2025-14821: Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows
Published Dec 17, 2025
·Updated
A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.
Affected Software
3 affected components
libssh libssh
libssh libssh<0.12.0
redhat Hardened Images
Event History
Dec 17, 2025
Data Sourced
via Red Hat·11:52 AM
DescriptionSeverityAffected Software
Apr 7, 2026
CVE Published
via MITRE·04:34 PM
Data Sourced
via MITRE·04:34 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:16 PM
DescriptionSeverityWeaknessAffected Software